Someone is creating tokens with the hope of selling them onwards. Most of them are created by a single entity, who spent about $30M in fees to do so, so presumably they expect people to buy them, and thus profit.
The only reason most Bitcoin users care is that they pushed up fees for everyone else (there is limited block space, so miners take the highest bids). Such few pressure is expected to be the norm eventually, and has happened before, but there's been a prolonged period (years) of low fees so it was a bit of a surprise to many.
The only reason most Bitcoin users care is that they pushed up fees for everyone else (there is limited block space, so miners take the highest bids). Such few pressure is expected to be the norm eventually, and has happened before, but there's been a prolonged period (years) of low fees so it was a bit of a surprise to many.